Hi Mrs. Peach and welcome!
I use my crockpot to make stews, vegan chili, hot cereal (I love to make steel cut oats in it, or millet with chopped apples and cinnamon), tapioca pudding. It is as easy as throwing some ingredients into the crockpot, turning it on low, and then going to bed. It takes about 7 or 8 hours on a low setting for the crockpot to make hot cereal or a good soup, just enough time to get a good night sleep!
I am very busy also, leaving the house at 6am and returning at 5pm Monday through Friday, and Saturday is hiking/snowshoeing/traveling day I spend with family or vegan meetups etc. So Sunday is my only slow day and I spend about an hour or two preparing food for the week. I might bake a few loaves of bread, or soak and simmer some dried beans, or make some brown rice ahead for a weeknight meal coming up. Sometimes I premake veggie/bean patties or energy bars and freeze them for later. Most vegan energy bars are great eaten right out of the freezer and keep well all day. When I make crockpot stew or soup, it keeps in the refrigerator up to five or six days, and each weekday morning I portion some out, heat it in the microwave, and add it to my little thermos for eating on the go at work. Vegan sandwiches and energy bars can be eaten on the go very easily too, even while driving.
Otherwise, some other easy ideas for eating at work are to bring a little baggie of plain oats, with some raisins or nuts/seeds mixed in there, and some spices and sweetener. Bring along a bowl. When it's time to eat, if there is a coffee pot there with hot water available, or a microwave, heat some water, pour your dry cereal in the bowl, and pour the hot water over it, just enough to cover. Let it soak a minute or two and viola you have a bowl of filling hot cereal. Fresh fruit is always portable and keeps easy. Though I wouldn't recommend peeling a banana while driving lol.